Clutch actuating means for hand brakes of railway cars



Aug. 18, 1953 R. J. OLAND ER CLUTCH ACTUATING MEANS FOR HAND BRAKES OF RAILWAY CARS 2 Sheets-Sheet 1 Filed Aug. 5, 1950 Inven lr:

fiolnma I Olanier, W

Aug. 18, 1953 R J. OLANDER BRAKES OF RAILWAY CARS Filed Aug. 5, 1950 2 Sheets-Sheet 2 36 .B 39 I z! 38 as 32 I z A 25 1/ l2. I8 10 v77 0 19 2T6 fi 50 5500000 zo v 2:)25 3 4 m I A Invert 62: Roland J Ola/Mew.

Patented Aug. 18, 1953 CLUTCH ACTUATING MEANS FOR HAND BRAKES OF RAILWAY CARS Roland J. Olander, Chicago, 111., assignor to W. H.

Miner, Inc., Chicago, 111., a corporation of Delaware Application August 5, 1950, Serial No. 177,808

6 Claims.

This invention relates to improvements in lever actuated clutch shiftin means for geared hand brakes for railway cars.

One object of the invention is to provide in a hand brake mechanism of the gear driven, power multiplying type, comprising the usual rotary chain winding member and rotary driving gear member connected by a clutch element, simple and efficient means for shifting the clutch element including an actuating lever, which, when thrown to either clutch engaging or disengaging position, holds the clutch element against being accidentally shifted.

A more specific object of the invention is to provide in a hand brake mechanism comprising a chain winding drum, a rotary driving member for the drum, a sliding clutch element rotatable in unison with the driving member and having clutch teeth engageable with clutch teeth on the drum, means for shifting the clutch element, comprising an upright shiftin lever and an actuating lever, the shifting lever being pivoted between its ends, and having its lower end operatively connected to the clutch element, the actuating lever being swingingly supported above the shifting lever for pivotal movement at its lower end, and having means thereon engageable with the shifting lever to actuate the same comprising a cam member at the pivoted end of the actuating lever and a lug outwardly of and spaced from said cam member, said cam member and lug being respectively engageable with the upper end of the shifting lever to move the same in reverse directions to disengage the clutch element from and engage the same with the winding drum.

Other objects of the invention will more clearly appear from the description and claims hereinafter following.

In the accompanying drawings forming a part of this specification, Figure 1 is a front elevational view, partly broken away, of a worm gear driven hand brake mechanism, illustrating my improvements in connection therewith, the housing for the mechanism being broken open and the mechanism therein being shown in vertical section. Figure 2 is a vertical sectional view, corresponding substantially to the line 2-2 of Figure 1. Figure 3 is a vertical sectional view, corresponding substantially to the line 3--3 of Figure 2, but showing the parts in different positions. Fi ure 4 is a broken plan view of the actuating lever shown in Figure 1.

My improved clutch actuating means is illustrated in the drawings as employed in connection with a well-known type of worm gear driven hand brake mechanism, comprising a chain winding drum l0, rotatable about a horizontal axis, a worm wheel I l in axial alignment with the drum, a sliding clutch element l2 operatively connecting the worm wheel and drum, and a Worm I 3 meshing with the worm wheel, the latter being actuated by the usual hand wheel, not shown. The operating parts of the mechanism are mounted within the usual housing, which is indicated by M, the worm I3 being rotatably supported in an upstanding extension l5 of the housing. As shown in Figure 1, the left hand end of the drum It is rotatably supported in the worm wheel II and the clutch element [2 is slidingly supported in the worm wheel, bein splined to the latter, as indicated at I6, for rotation in unison therewith and lengthwise sliding movement with respect to the worm wheel and drum. The clutch element and drum have cooperating clutch teeth I? and I8, and a spring [9 yieldingly urges the clutch element to its operatively engaged position. The clutch element 12 protrudes outwardly beyond the left hand side of the housing M, as shown in Figure 1, and is provided with a spool member 20 at its outer end, which is fixed thereto, for rotation in unison therewith. The spool member 20 is provided with the usual annular groove 2|.

In carrying out my invention, I provide broadly a shifting lever A, which is engaged with the spool member 20 of the clutch element 12, and an actuating lever B having operative engagement with the shifting lever.

The shifting lever A is located above the spool member 26 of the clutch element l2, being supported on an outwardly extending lug 22, projecting laterally from the left hand end of the housing 54, as seen in Figure 1. The lever A is arranged upright, being swingingly supported between its ends on a pivot pin 23 extending through the lug 22 and said lever. The lever A thus presents an upstanding top arm 24 and 2. depending bottom arm 25. The depending arm 25 is forked, as shown most clearly in Figure 2, and is engaged over the spool member 2!}, the spaced sections of the fork thereof being provided with inwardly projecting trunnions 26-426 extending into the groove 2! of said spool member 26. The top arm 24 of the lever A is also forked, as shown in Figure 2, said forked portion comprising a pair of laterally spaced fingers 212l, which have their lower end sections offset inwardly, as indicated at 28--28. The sections Eli-28 embrace the supporting lug 22 at opposite sides, and have aligned openings therein accomodating the opposite ends of the pivot pin 23. The upper ends of the fingers 27-21 are shaped as shown in Figure 1, being pointed at their outer ends. The left hand side edge of each finger 21, at the outer end thereof, is provided with a concave face 29.

h tlre-iugs the shifting lever A- to hold the" clutch element engaged. -wiil be*evi'den-t, in this position of I the parts; the weight of the lever B a positively 'hol'ds the arm' i i of the -shifting levern against 'F-igure B; is uively pr-evente' The actuating lever B comp-rises an elongated handle portion 36 and a thickened head .portion 3! at the inner end of said handllaeportion; The head portion 3F includes laterally spaced cam wings 32-32, which are integral with said head and are offset laterally from the opposite sides" of said. main body 1301313101150$"S2lidf'1hhd? :The lever B is swingingly sup-ported at lites-lower. end on an outstanding lug 33iatithe left hand side of the upstanding extension oftlie hou'sing M by means of a pivot pin 3'4; extending through said lug 33 and the spaced cam wings 3232 of said lever B. The cam wingsHil 32ixpresent rounded cam faces 35-35, which are-engageable with the concave faces 2929 ofthe arm 24 of the lever A. At the inner end of the head 3! that is, at the point where the handle portion 30 ofthelver B mergeswith the head 3!,

laterally outstanding lugs 3 3 Sare provided'at opposite-sides, which 'are engageable with th e rear==edgesof the spaced" fingers-Q'I ZT- of the arm 24ofthe lever A; \vhen' tlie -form'er is swung to the p'o's'ition shown Figure 1. -As--wi'l-l be evident, when" th'e' lever is in the position shownin Figure l, the head 3i 'thereof is: ae-

- commodated between the fi-ngers 2I --2T of -'the amide of the -lever Downward*movenrentof the lever B '-is "positivel Inited 1331* engagement of the-fiat end -"faoe 3B "o'f 'thelever with the sideof the housing l 41 as shownin Figure 1:

In Figure 1,- theclutch element i2 issh'own'as operatively engaged with the -teeth-"of the drum mi- In this position of 'the' parts; the l'eVerBis rizonta y d-isposed, as shown in Figurel with 3 6 buttressedagai-nst"the -arm "2 t of swinging movement toward thele'it; thereby maintaining the clutch element iKin it-S engaged position."

To sengage theelutcnelement i iii-the lever is -swung "upwardi? and toward the right to the-position shown' in Figure 3; thus; through the action of the cam wings m m camming the upper end I of the shifting 'lever A toward the lei-tto shift' the clutch element: I2 c to the right to its disengaged position, as shown in Fig?- ure '3; D'isen'gagement of -'thecam i-ngs e3 2 3 2 oi the 'leve1 'from th'e 'lever A,in it movement to-th'evrigl* that to-'- the=D W blv engagement 05 the flat" abutment -face*-39 ofthe lever with the- -housing i 4;:

'I claim-r 1. In a shifting-mechanism,-* the combination with a lever'pivotedebetween its ends, -'said=' lever having one end connected to an element tokbe shifted; iofriassecondlever pivoted-lat lone-fend andihaving lax zcam: head at: said.ipivotedczendaem gageable with: one side oisthe otherz'end of: said first 'namedvleverifor swinging the latter rina'one direction; and avlug H? said second named lever -betweentheeends -.of-.-the same-=engageablewith gageable with one side of the upper end portion of said first named lever for swinging the same in ionedirection; and a lug-ion sa-id-second named lever spacedii'om said"camhead and engageable with the oposite side of the upper end portion of said first named lever for swinging the samevin :reverse direction.

-111 a-shifting mechanism, the combination with an upright lever pivoted between its ends "havingian'upstanding top arm and a depending bottom arm, said'bottom arm having its lower end connectedto an element to be shifted; of a second. lever above said first named lever, said second named lever being pivoted at its lower 'end, a cam on said lower end of said second named lever engageable with one side of the upper endof Y said top arm of said firstnamed lever "for swing'ing 'the same in onei direction; and a lug on said second named leverzspiaced:from said and engageable with 'the'ppposite side of saidtop' arm of said firstnamed lever-:ior-swinging the samein reverse direction.

4-; Ina shiftingmechanism the combination with a-lever pivoted between its ends, :said lever having trunnions at one end engaged :with an element-to 'beshifted; of-a secondllever pivoted at one-end and having cammeans at saidpivoted end engageable with one side-oi theothe'riend portion of said first named lever; and a lug on said second namedleverieccentridto the pivot thereof and engageabl'ewviththe opposite -side o'f'said other end portionof said 'first named lever.

55111 a shifting mechanism, the combination witli'a pivotally supporteduprightlever having top and bottom armsextending from"the pivoted portion "thereof, said bottom arm -being engageaole 'with an elenient tobeshiftedj' of a second lever above said-' fir'stnamed leverg a oam"hea'd on the :inner of said second'na-med lever, said last named lever being-,p-ivo'tally: supporte'd at said inner end; and a lug on'said seoond'named lver between the ends thereof,- saidcam head and; lug being engageablerespectively withzthe opposite sides 'of the top armot-said first" named 3 lever ior' swinging the same in reverse directions.

6. In a shiftin mechanism, the combin'ation with an upright leverpivoted between-its ends,

-sai-d"--lever-having its lower end connected to an -'e1e1nent"to-be=shifted; ofa second lever-above said'first'named "lever; saidsecond named lever being pivoted. at its lower end for swinging movement tar-opposite si'des of a'vertical position thereofj aoam'on the-lower end of said second named lever engageable with one'side-of the upper end portion of said first named lever when saidseoond named lever-is swung to one-side of said vertical position; and'a lug on said second named lever between the ends thereof engageable with the opposite side of theupper end portion ofsaid first-named lever when said second -named lever is swungto the other sideof said vertical-position.

ROLAND J. OLANDER.

:References Cited in the idle offithis patent UNI-TED STATES PATENTS Number Name Date 504330 Co1dwel1 Sept." 5, 1893 118651630 Haseltine July"5,1932 2,119'2104: .Bow'den 'Sept. 7,193? 2,374,542 Hansman ,Apr. 24; 1945 23231043 .Olstad June 24," 1947 21436397" Nutt Mar."3, 194'8 

